Apparatus for pressure distilling oils



P 1929- G. EGLOFF ET AL APPARATUS FOR PRESSURE DISTILLING OILS Original Filed Feb. 21, 1921 Patented Sept. 24, 1929 UNITED STATES PATENT OFFICE.

GUSTAV EGLOFF AND HARRY P. BENNER, OF CHICAGO, ILLINOIS, ASSIGNOBS T0 UNIVERSAL OIL PRODUCTS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF SOUTH DAKOTA APPARATUS FOR PRESSURE DISTILLING OILS Application filed February 21, 1921, Serial No. 446,876. Renewed September 18, 1926.

This invention relates to improvements in an apparatus for the pressure distillation of oils and refers more particularly to that type of pressure distillation in which the oil is heated in a heating chamber as for example, a series of tubes and then passed, preferably in substantially liquid phase, to an expansion chamber where vaporization takes place and the vapors removed, condensed and collected.

The particular novelty of the present invention lies in the manner of constructing the expansion chamber in such a manner that it can be more readily cleaned of the precipitated carbon. This is accomplished by makin; the expansion chamber of two concentric shells or drums, the inner one of which is removable and preferably formed of separable segments as for example, of two detachable halves.

In the drawing, Fig. 1 is a view, partly in vertical section and partly in side elevation, of our improved apparatus. I

F ig. 2 is a section taken through the line A-A of Fig. 1.

Fig. 3 is a sectional view taken through the line B-B of Fig. 1.

Referring in detail to the drawing, 1 designates the furnace in which is mounted the heating coil 2, the inlet side of which is connected to feed line 3 leading from feed pump 4. The furnace is provided with a suitable stack 5. The discharge side of the coil is connected by a transfer line to one end of an expansion chamber 6. hereinafter more specifically described. This expansion chamber is supported on suitable standards or masonry work 7 and is provided with the residue drawofl pipe 8 controlled by throttle valve 9 and with vapor outlet pipe 10 extending into the lower end of a vertical dephlegmator 11. The upper end of the pipe 10 is provided with the spaced cap member 12 to prevent the reflux condensate from falling backinto the expansion chamber. In-

stead, the reflux condensate is drawn off through the pipe 13 connected to the feed line 3. The dephlegmator is provided with the alternately disposed baffles 14, vapor outlet pipe 15 connected to condenser coil 16,

seated in condenser box 17. The lower end of the coil 16 is connected by pipe 18 to the top of receiver 19. This receiver 19 has the usual pressure gauge 20, liquid level gauge 21. gas outlet pipe 22, and distillate drawoff pipe 23. Various parts of the system are provided with throttle valves 24 whereby a desired vap6r pressure may be maintained on all or part of the system.

Referring now to the construction of the expansion chamber 6, it comprises an outer shell 25 having a fixed head 26 at one end and a removable head 27 at the other end. Inside of the outer shell 25 is concentrically disposed an inner shell 28, which consists of upper and lower halves 29 and 30 having the opposed abutting longitudinally extending flanges 31 and 32 which may be suitably bolted together. The upper shell 29 is suitably apertured as shown at 33 to permit the vapors to escape into the pipe 10. The head 27 is connected with the outer shell 25 by.

means of the op )osed flanges 34 suitably bolted together. s a means for strengthening the head 27, the inner shell is provided at the end nearest the head 27 with the reinforcing ribs 35 and 36 having bolt holes 37 to receive the bolts 38 extending through the head 27.

The inner shell is preferably mounted on the roller bearings 39 whereby when it may be desired to remove the inner shell so as to clean out the precipitated or encrusted carbon, this inner shell can be more readily pulled out of the expansion chamber. The head 27 is removed, the inner shell drawn out. the bolts removed from the flanges 31 and 32 and the two halves separated in order that they may be quickly and easily cleaned.

We claim as our invention:

1. In an apparatus for distilling oil. a vapor expansion chamber consisting of a relatively stationary outer shell and a removable inner shell concentric with said outer shell, said inner shell being open at both ends and formed of a plurality of separable segments.

2. In an apparatus for distilling oil. a vapor chamber, consisting of a relatively stationary outer shell having a fixed head,

and a removable head, a removable inner shell, said inner shell being open at both ends and formed of a plurality of separable segments.

3. An apparatus for hydrocarbon oil treatment, including an expansion chamber comprising a relatively stationary outer shell and a removable cylindrical inner shell concentric with said outer shell, said outer shell having a movable closure element operable to permit the introduction and withdrawal of said movable inner shell.

GUSTAV EGLOFF. HARRY P. BENNER. 

